<template>
  <div class="hot-search-container">
    <div class="hot-search">
      <!-- 搜索框部分 -->
      <el-card class="search-box">
        <div class="search-input">
          <input 
            v-model="searchText" 
            :placeholder="`在 ${getCurrentEngine.label} 中搜索...`"
            @keyup.enter="handleSearch"
          >
          <button class="search-btn" @click="handleSearch">
            <i class="fas fa-search"></i>
          </button>
        </div>
        <div class="search-engines">
          <button 
            v-for="engine in searchEngines" 
            :key="engine.name"
            :class="['engine-btn', { active: currentEngine === engine.name }]"
            @click="currentEngine = engine.name"
          >
            <svg-icon :icon-class="engine.icon"></svg-icon>
            {{ engine.label }}
          </button>
        </div>
      </el-card>

      <!-- 热搜列表部分 -->
      <el-card class="hot-lists">
        <div class="hot-tabs">
          <button 
            v-for="tab in hotTabs" 
            :key="tab.type"
            :class="['tab-btn', { active: currentTab === tab.type }]"
            @click="currentTab = tab.type"
          >
            <i :class="tab.icon"></i>
            {{ tab.label }}
          </button>
        </div>
        
        <div class="hot-content">
          <div class="hot-grid" v-loading="loading">
            <div 
              v-for="(item, index) in currentHotList" 
              :key="index" 
              class="hot-card"
              :class="[currentTab, { 'top-rank': index < 3 }]"
              @click="handleHotItemClick(item)"
            >
              <span class="rank" :class="getRankClass(index)">{{ index + 1 }}</span>
              <div class="card-content">
                <div class="title-wrap">
                  <a :href="item.url" target="_blank" class="title">{{ item.keyword }}</a>
                  <span class="hot-tag" v-if="item.tag">{{ item.tag }}</span>
                </div>
                <div class="card-footer">
                  <span class="hot-value" v-if="item.hotValue">
                    <i class="fas fa-fire"></i>
                    {{ formatHotValue(item.hotValue) }}
                  </span>
                  <span class="trend" v-if="item.trend">
                    <i :class="getTrendIcon(item.trend)"></i>
                  </span>
                </div>
              </div>
            </div>
          </div>
        </div>
      </el-card>
    </div>
  </div>
</template>

<script>
import { getHotListApi } from '@/api/hot-search'
export default {
  name: 'HotSearch',
  data() {
    return {
      searchText: '',
      currentEngine: 'baidu',
      currentTab: 'weibo',
      loading: false,
      searchEngines: [
        { name: 'baidu', label: '百度', icon: 'baidu', url: 'https://www.baidu.com/s?wd=' },
        { name: 'google', label: '谷歌', icon: 'chrome', url: 'https://www.google.com/search?q=' },
        { name: 'gitee', label: '码云', icon: 'gitee', url: 'https://search.gitee.com/?q=' },
        { name: 'github', label: 'GitHub', icon: 'github', url: 'https://github.com/search?q=' }
      ],
      hotTabs: [
        { type: 'weibo', label: '微博热搜', icon: 'fab fa-weibo' },
        { type: 'zhihu', label: '知乎热榜', icon: 'fab fa-zhihu' },
        { type: 'toutiao', label: '头条热榜', icon: 'fas fa-fire' },
        { type: 'baidu', label: '百度热搜', icon: 'fas fa-chart-line' },
        { type: 'csdn', label: 'CSDN热榜', icon: 'fas fa-code' }
      ],
      hotLists: {
        weibo: [],
        zhihu: [],
        toutiao: [],
        baidu: [],
        csdn: []
      }
    }
  },
  computed: {
    getCurrentEngine() {
      return this.searchEngines.find(engine => engine.name === this.currentEngine)
    },
    currentHotList() {
      return this.hotLists[this.currentTab] || []
    }
  },
  methods: {
    handleSearch() {
      if (!this.searchText.trim()){
        this.$message.warning('请输入搜索内容')
        return
      }
      const engine = this.getCurrentEngine
      window.open(engine.url + encodeURIComponent(this.searchText), '_blank')
    },
    getRankClass(index) {
      if (index < 3) return `rank-${index + 1}`
      return ''
    },
    formatHotValue(value) {
      if (value >= 10000) {
        return (value / 10000).toFixed(1) + 'w'
      }
      return value
    },
    async fetchHotList(type) {
      this.loading = true
      try {
        // 这里替换为实际的API调用
        const res = await getHotListApi(type)
        this.hotLists[type] = res.data.data
      } catch (error) {
        this.$message.error('获取热搜数据失败')
      } finally {
        this.loading = false
      }
    },
    handleHotItemClick(item) {
      if (item.url) {
        window.open(item.url, '_blank')
      }
    },
    getTrendIcon(trend) {
      if (trend === '上升') return 'fas fa-arrow-up text-success'
      if (trend === '下降') return 'fas fa-arrow-down text-danger'
      return 'fas fa-minus text-warning'
    }
  },
  watch: {
    currentTab: {
      immediate: true,
      handler(newTab) {
        this.fetchHotList(newTab)
      }
    }
  }
}
</script>

<style lang="scss" scoped>
.hot-search-container {
  padding: $spacing-lg;
}

.hot-search {
  max-width: 1200px;
  margin: 0 auto;
}


.search-box {
  margin-bottom: $spacing-xl;
  padding: $spacing-lg;

  .search-input {
    position: relative;
    margin-bottom: $spacing-lg;
    
    input {
      width: 100%;
      padding: $spacing-md $spacing-md;
      padding-right: 60px;
      border-radius: $border-radius-md;
      border-color: var(--border-color);
      font-size: 1.1em;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      background-color: var(--card-bg);
      &:focus {
        outline: none;
        border-color: $primary;
        box-shadow: 0 0 0 4px rgba($primary, 0.1);
      }
    }

    .search-btn {
      position: absolute;
      right: $spacing-md;
      top: 50%;
      transform: translateY(-50%);
      background: $primary;
      border: none;
      color: var(--card-bg);
      width: 40px;
      height: 40px;
      border-radius: 50%;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

      &:hover {
        transform: translateY(-50%) scale(1.1);
        box-shadow: 0 4px 12px rgba($primary, 0.3);
      }
    }
  }

  .search-engines {
    display: flex;
    flex-wrap: wrap;
    gap: $spacing-sm;

    .engine-btn {
      padding: $spacing-sm $spacing-lg;
      border: none;
      background: var(--hover-bg);
      color: var(--text-secondary);
      border-radius: $border-radius-md;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      display: flex;
      align-items: center;
      gap: $spacing-sm;
      font-size: 0.95em;
      font-weight: 500;

      &.active {
        background: $primary;
        color: var(--text-primary);
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba($primary, 0.2);
      }

      &:hover:not(.active) {
        color: $primary;
        background: var(--hover-bg);
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
      }

      svg-icon {
        font-size: 1.2em;
      }
    }
  }
}

.hot-lists {
  padding: $spacing-lg;

  .hot-tabs {
    display: flex;
    gap: $spacing-md;
    margin-bottom: $spacing-xl;
    padding: 0 $spacing-md;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    overflow-x: auto;
    scrollbar-width: none;
    
    &::-webkit-scrollbar {
      display: none;
    }

    .tab-btn {
      padding: $spacing-md $spacing-xl;
      border: none;
      background: none;
      color: var(--text-secondary);
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      display: flex;
      align-items: center;
      gap: $spacing-sm;
      white-space: nowrap;
      position: relative;
      font-size: 1em;
      font-weight: 500;

      &::after {
        content: '';
        position: absolute;
        bottom: -1px;
        left: 50%;
        width: 0;
        height: 3px;
        background: $primary;
        border-radius: 3px;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      }

      &.active {
        color: $primary;

        &::after {
          width: 100%;
          left: 0;
        }
      }

      &:hover:not(.active) {
        color: $primary;
      }

      i {
        font-size: 1.2em;
      }
    }
  }

  .hot-content {
    padding: 0 $spacing-md;

    .hot-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
      gap: $spacing-lg;

      .hot-card {
        position: relative;
        border: 1px solid var(--border-color);
        border-radius: $border-radius-md;
        padding: $spacing-md;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        display: flex;
        gap: $spacing-md;
        cursor: pointer;
        
        &:hover {
          transform: translateY(-3px);
          background: var(--hover-bg);
          box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);

          .title {
            color: $primary;
          }

          .rank {
            transform: scale(1.1);
          }
        }

 

        .rank {
          width: 36px;
          height: 36px;
          display: flex;
          align-items: center;
          justify-content: center;
          border-radius: 10px;
          font-size: 1.1em;
          font-weight: 600;
          color: var(--text-primary);
          flex-shrink: 0;
          transition: all 0.3s ease;

          &.rank-1 { background: linear-gradient(135deg, #ff6b6b, #ee5253); }
          &.rank-2 { background: linear-gradient(135deg, #5c7cfa, #4263eb); }
          &.rank-3 { background: linear-gradient(135deg, #ffd43b, #fab005); }
        }

        .card-content {
          flex: 1;
          display: flex;
          flex-direction: column;
          gap: $spacing-sm;

          .title-wrap {
            display: flex;
            align-items: flex-start;
            gap: $spacing-sm;
          }

          .title {
            color: var(--text-primary);
            text-decoration: none;
            font-size: 1.1em;
            line-height: 1.5;
            font-weight: 500;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.3s ease;
            flex: 1;

            &:hover {
              text-decoration: none;
            }
          }

          .hot-tag {
            padding: 3px 8px;
            border-radius: 6px;
            background: rgba($primary, 0.1);
            color: $primary;
            font-size: 0.85em;
            font-weight: 500;
            white-space: nowrap;
          }

          .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            font-size: 0.9em;

            .hot-value {
              display: flex;
              align-items: center;
              gap: 6px;
              color: #ff6b6b;
              font-weight: 500;
              
              i {
                font-size: 1.1em;
              }
            }

            .trend {
              i {
                font-size: 1.1em;
                &.text-success { color: #2ecc71; }
                &.text-danger { color: #e74c3c; }
                &.text-warning { color: #f1c40f; }
              }
            }
          }
        }
      }
    }
  }
}

@include responsive(sm) {
  .hot-search-container {
    padding: $spacing-sm;
  }

  .hot-search {
    .search-box,
    .hot-lists {
      padding: $spacing-md;
    }

    .hot-lists {
      .hot-content {
        .hot-grid {
          grid-template-columns: 1fr;
          gap: $spacing-md;
        }
      }
    }
  }
}
</style> 